What is the requirement of a navigator who used an ECDIS?（）<br>A:Good navigational knowledge and a professional job attitude<br>B:Good computer knowledge<br>C:Good system knowledge<br>D:Nothing special

What is the requirement of a navigator who used an ECDIS?（）
A:Good navigational knowledge and a professional job attitude
B:Good computer knowledge
C:Good system knowledge
D:Nothing special

出自：海船船员证

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